Finally solved! I have been stuck on third puzzle for some days, but today I had the idea... great logic level, thanks!
@meko let me tell you a story ... I started playing this level and not remembering R, I went fast with B and with a tricky step I have reached the win block ... uuuhhmn, then when I was going to value it, I started to read the comments of the other players and I have realized that I had not done it in your intended solution and without reading the spoiler I have analyzed the level again and suddenly .... R, R, R, R, R, R , R, R, R .... what are you doing here? Great level of logic and a little skill !!! I love aesthetics too, very sober, minimalist and elegant .... a great job @meko
